Can someone help me figure out why the following code (problem line ***ed)
is throwing the the error:

"The macro or function set to the BeforeUpdate or ValidationRule property
for this field is preventing the DB from saving the data in this field."

when this control has neither a BeforeUpdate event nor a Validation Rule
either macroed or functioned.  The click event here is literally all the
code there is for this list box.

Private Sub lstAvailable_Click()

   Dim strItem As String

   If (lstAvailable.ItemsSelected.Count = 1) Then

       lstAvailable.SetFocus
       strItem = lstAvailable.Column(1)

       txtAddEditAvailable.SetFocus
       txtAddEditAvailable.Text = strItem

   ElseIf (lstAvailable.ItemsSelected.Count > 1) Then

       lblMultipleAvailable.Visible = True

   End If

End Sub